Agent Name

Ferrous chloride

CAS Number

7758-94-3

Formula

Cl2-Fe

Major Category

Metals

Synonyms

Ferro 66; Ferrous dichloride; Iron chloride (FeCl2); Iron dichloride; Iron protochloride; Iron(2+) chloride; Iron(II) chloride; Natural lawrencite; Ferrous chloride, solid; Ferrous chloride, solution; [ChemIDplus] UN1759; UN1760 (solution)

Category

Metals, Inorganic Compounds

Description

White to white-green crystals; [NIOSH] Highly hygroscopic white solid (may have a green tint); Soluble in water; [Merck Index] Light green odorless solid; [CHRIS] Off-white odorless powder; [Alfa Aesar MSDS]

Sources/Uses

Used as a reducing agent, a mordant in textile dyeing, a sludge dewatering agent in sewage treatment, in metallurgy, as a hot bath in iron plating, and to make pharmaceuticals and ferric chloride; [HSDB] Found in nature as the mineral lawrencite; [Merck Index]

Comments

Toxic by ingestion: 10 tablets (0.3 g Fe/tablet) causes mild illness in children; 20 tablets cause severe intoxication; Mortality rate was 1% in 474 acute iron poisoning cases; [ACGIH] Corrosive to skin; [Quick CPC] An irritant that may cause liver injury; [Merck Index] A skin, eye, nose, and throat irritant; [CHRIS] Causes burns; Harmful by ingestion; [Alfa Aesar MSDS] See "Iron salts, soluble."

Exposure Assessment
Skin Designation (ACGIH)

Insufficient data

TLV (ACGIH)

1 mg/m3, as Fe (soluble iron salts)

Explanatory Notes

TLV is for "Iron salts, soluble"; [ACGIH] Melting point = 674 degrees C; [HSDB] The Guide in the Emergency Response Guidebook is for "Ferrous chloride, solid."

Adverse Effects
Hepatotoxin

Hepatotoxin, Secondary

Dermatotoxin

Skin Burns

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Processes

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